beaedsley



I UN TED STATES PATENT Fries.

TRUMAN J PEARCE AND MELVIN XV. BEARDSLEY, OF OAKLAND, ASSIGNORS TO THEPARAFFINE PAINT COMPANY, OF SAN FRANCISCO, CAL.

RENDERING ANIMAL AND VEGETABLE FIBER WATER-PROOF, 84C.

TJBECIFICATION forming part of Letters Pa tent No. 348,993, dated.September 14,1886.

Application filed March 21, 1885. Serial No. 159,878. (Specimens.)Patented in England February 5, 1885, No. 1,604; in France March30,1886, No. 162,442, and in Belgium March 30, 1886.

To all whom it may concern.-

Be it known that we, TRUMAN J. PEARCE and MELVIN W, BEARDSLEY, citizensof the United States, residing in the city'of Oakland, county ofAlameda, and State of California, have invented certain new and usefulImprove ments in Rendering Animal and Vegetable Fiber and Productsthereof \Vater-Proof and Capable of Resisting Acids and Alkalies, and wedo hereby declare that the following is a full, clear, and exactdescription of our said invention.

Our invention relates to improvements made in all kinds ofclotl s, knitgoods, felts, matting, ropes, cordage, and all kinds of textures andfabrics. except paper,'that'are made of vegetable fiber, wool, hair, orsilk, by weaving, matting, knitting, felting, spinning, twisting, orbraiding.

\Ve do not include paper in this specification, as we have made aseparate application for patent to cover all kinds of-paper improvedunder our invention, said application being known by the Serial No.159,880, and filed of (well date with this application.

Ve have discovered that by treating the foregoing substances with amixture of bisulphide of carbon and maltha,-as hereinafter explained,they will acquire new characters and properties to such an extent as tobecome essentially new articles of commerce.

The compound itself is new, and it may be made with many variations ofits incidental qualities, such as are common to other'substances, andyet all of the newly-found characteristics which are peculiar to itselfwill be preserved. Upon the compound itself Letters Patent have beengranted to us, No. 338,868, dated March 30, 1886, and the formulae givenin said Letters Patent are employed by us in this invention when foundapplicable.

The followingis a description of the mode in which our compound shouldbe prepared for treating the commodities mentioned; but we would not beunderstood as limiting ourselves thereto, as the proportions may bevaried to make a thicker or a thinner composition.

It is better to make our new compound for some purposes-such, forinstance,'as that of covering coarse cloth for roofingof a thicker 5oconsistency than it should be when it is intended for other purposes,such as saturating cotton belts for driving pulleys in machinery.

A mixture produced from fifty parts refined maltha and fifty (50) partsbisulphide of carbon would be quite limpid, while one produced fromsixty parts refined maltha and forty (40) parts bisulphide of carbonwould be also limpid, but in less degree.

We make the compound extremely heavy 60 and stiff by mixing twenty-five(25) parts of the bisulphide of carbon with twenty-five (25) parts ofrefined inaltha and fifty (50) parts of refined asphalt. In this formthe compound would answer very well for covering coarse cloth for roofsand surfaces exposed to the elements and not subject to abrasion; buteven for such purposes we would prefer the compound mixed withthirty-four (34) parts bisulphide of carbon and sixty-six (66) parts 70maltha. This would be a good form of the compound for most of the usesto which it would generally be applied.

By using a larger proportion of inaltha than any-herein mentioned thecompound can be made in a plastic condition and so nearly solid that itwill need to be applied with a trowel or similar instrument. In suchcondition it is tenacious and will not saturate unless very slightly. Inthis compound, also, the various 8o well-known properties of varioussubstances may beemployed to produce their natural effects-such as, forinstance, asphalt, which tends to make the compound more tenacious andadds body to it; sulphur, which furnishes 8 5 hardness and smoothness ofsurface, but makes it more brittle when it becomes dry; rosin, whichtends to make the compound flow more freely, and also adds hardness toit; paraffine, which makes it more elastic and pliable. o Therefore,when desirable to give the compound special characteristics for specialpurposes, a proportion may be added to the compound of any ofthcsesubstances. The maltha should have dirt and all impurities removed5 from it when found therein, as they tend to injure the mixture.

The substances mentioned are treated with our compound either byapplying the compound to them with a brush or by saturating thesubstance with the compound in any convenient manner.

Cordage and other fibrous materials have often been treated withcompounds of which tar forms the principal element, for the purpose ofmaking them less liable to be affected by water and the elements; but itis well known that such compounds destroy about one-fourth of thestrength of the fibrousmaterial to which they are applied.

Our new compound is applied in a cold condition to the substances namedherein, and not only does not destroy their strength, but rather adds toit. 'By actual tests we have discovered that cordage treated with ourcompound is stronger than it wasbeforebeing treated. The substancestreatedwith our compound are also cleaner to handle, are free fromoffensive odors, and can be applied to many useful purposes for whichthey would be objectionable if they soiledwith tar or grease whatevercame in contact with them, or it they emitted offensive odors.

As already stated, the maltha and. bisulphide-of-carbon mixture can beproduced of varying consistency, and is therefore applicable fortreating textiles of all grades, from the finest silks, cotton, andlinen goods to the heaviest canvas and cloth, and in none of the(littering conditions of application is the pliability, strength, orother quality of the fabric or fiber which forms the base of thematerial affected, but, on the other hand, the same is strengthened andprotected against extraneous influences of an injurious character. Theseeifects are due to the peculiar properties of the mixture and to theintimate union of the mixture with the fiber or fabric. The character ofthe mixture enables us to carry on the described process at normaltemperature, both as regards the fiber or i'abricbeing treated and themixture, and entirely without the aid of heat. Consequently the fiber orfabric is not scorched or inj ured in any manner, but, as above stated,receives additional strength from the treatment.

The treated fabric or fiber is inscnsiblc to the extremes of heat andcold, is odorless, and less inflammable than untreated fiber or fabric.

Having thus fully described our invention, what we claim, and desire tosecure by Letters Patent, is

As new articles of mainit'acture, all kinds of cloths, knit goods,felts, matting, ropes, cordage,and all kinds of textures and fabricsother than paper, whcnmade of either vegetablefibcr or wool or hair orsilk and treated withacompound of bisulphide of carbon and maltha,substantially as herein described and set forth. TRUMAN J. PEARCE. [L s]MELVIN XV. BEARDSLEY. [I.. s] Vitnesses:

EDWARD E. Osnonx, L. OSBORN.

